Optimization of Technological Parameters of the Process of Forming Therapeutic Biopolymer Nanofilled Films

Bembenek, Michał; Popadyuk, O. Ya.; Shihab, Thaer; Ropyak, Lіubomyr; Uhryński, A.; Vytvyts’kyi, V. I.; Bulbuk, Oleksandr

doi:10.3390/nano12142413

Cited by 8 publications

(4 citation statements)

References 93 publications

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“…PTFE is a biocompatible material and has no allergic reactions. Therefore, it has wide application in medicine for the production of prosthetic joint implants, prostheses, catheters, and other medical devices [15,16]. In mechanical engineering, PTFE and composites based on it are used in the production of bearings, shafts, seals, and other components that must operate under conditions of high temperature and pressure [17][18][19].…”

Section: Problem Contextmentioning

confidence: 99%

“…There is a certain variety of descriptions for the viscoelastic-plastic behavior of a material; in particular, there are such models as the cooperative-viscoplasticity theory based on overstress (VBO) model [16], combining a nonlinear viscoelastic model with a viscoplastic model using the von Mises yield criterion [12,24,[50][51][52], etc. However, in the present work, gamma-modified PTFE is considered.…”

Section: On the Choice Of A Mathematical Modelmentioning

confidence: 99%

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The Study Influence Analysis of the Mathematical Model Choice for Describing Polymer Behavior

Kamenskikh,

Nosov,

Bogdanova

2023

Polymers

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The article considered the three types of description of the material behavior model: elastic, elastic–plastic, and viscoelastic. The problem is considered in the framework of deformable solid mechanics. The paper considers the possibility of describing modern polymeric and composite materials used as antifriction sliding layers in the viscoelasticity framework. A numerical procedure for finding the coefficients to describe the viscoelastic material behavior using the Prony model has been implemented. Numerical results and experimental data are compared. The model problem of spherical indenter penetration into polymer half-space is realized. The influence of the system discretization on the numerical solution is analyzed. The influence of the polymer behavior description in static and dynamic problem formulations is analyzed.

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Section: Problem Contextmentioning

confidence: 99%

Section: On the Choice Of A Mathematical Modelmentioning

confidence: 99%

The Study Influence Analysis of the Mathematical Model Choice for Describing Polymer Behavior

Kamenskikh,

Nosov,

Bogdanova

2023

Polymers

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“…The availability of metal, oxide, composite and non-metallic coatings allows for rationally combining the base and coating materials’ properties. The most frequently used coatings are paint coatings [ 1 , 2 , 3 , 4 , 5 ], polymers [ 6 , 7 , 8 ], and biopolymer films [ 9 , 10 ]. All these types of widespread coatings are used in various fields of technology and medicine.…”

Section: Introductionmentioning

confidence: 99%

Multiclass Level-Set Segmentation of Rust and Coating Damages in Images of Metal Structures

Bembenek

Mandziy

Ivasenko

et al. 2022

Sensors

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This paper describes the combined detection of coating and rust damages on painted metal structures through the multiclass image segmentation technique. Our prior works were focused solely on the localization of rust damages and rust segmentation under different ambient conditions (different lighting conditions, presence of shadows, low background/object color contrast). This paper method proposes three types of damages: coating crack, coating flaking, and rust damage. Background, paint flaking, and rust damage are objects that can be separated in RGB color-space alone. For their preliminary classification SVM is used. As for paint cracks, color features are insufficient for separating it from other defect types as they overlap with the other three classes in RGB color space. For preliminary paint crack segmentation we use the valley detection approach, which analyses the shape of defects. A multiclass level-set approach with a developed penalty term is used as a framework for the advanced final damage segmentation stage. Model training and accuracy assessment are fulfilled on the created dataset, which contains input images of corresponding defects with respective ground truth data provided by the expert. A quantitative analysis of the accuracy of the proposed approach is provided. The efficiency of the approach is demonstrated on authentic images of coated surfaces.

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“…Calculation of thin-walled layered shells under radial load str given in works [ 47 , 48 ], and axial loads in [ 49 , 50 ]. The influence of the direction of loading and the shape of the cross-section on the Young’s modulus of the samples was established [ 51 ], as well as the influence of applications and material properties [ 52 , 53 ].…”

Section: Introductionmentioning

confidence: 99%

Optical and Mechanical Properties of Layered Infrared Interference Filters

Bembenek

Маковійчук

Shatskyi

et al. 2022

Sensors

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The design and manufacturing technology of interference-absorbing short-wave filters based on a layered composition of Si–SiO on a sapphire substrate of various shapes was developed. A transition layer of SiO was applied to the surface of the substrate, alternating with layers of Si–SiO with an odd number of quarter-wave layers of materials with high (Si) and low refractive indices (SiO), and the application of an outer layer of SiO as an appropriate control of the materials’ thickness. The optical properties of the infrared light filter were studied. It was established that the created design of the light filter provides the minimum light transmission in the visible region of the spectrum from 0.38 to 0.78 µm and the maximum in the near infrared region from 1.25 to 5 µm and has stable optical indicators. A method for studying the stress–strain state and strength of a multilayer coating of a light filter under the action of a local arbitrarily oriented load was developed. For simplicity in the analysis and for obtaining results in the analytical form, the one-dimensional model of the configuration “multilayer covering—firm substrate” constructed earlier by authors was used. From a mechanical point of view, the upper protective layer of the multilayer coating was modeled by a flexible plate, and the inner operational composite N-layer was subjected to Winkler’s hypothesis about the proportionality of stresses and elastic displacements.

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Optimization of Technological Parameters of the Process of Forming Therapeutic Biopolymer Nanofilled Films

Cited by 8 publications

References 93 publications

The Study Influence Analysis of the Mathematical Model Choice for Describing Polymer Behavior

The Study Influence Analysis of the Mathematical Model Choice for Describing Polymer Behavior

Multiclass Level-Set Segmentation of Rust and Coating Damages in Images of Metal Structures

Optical and Mechanical Properties of Layered Infrared Interference Filters

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